It's quite often that I have an array of elements and when a certain condition happens that I need to remove a particular element from my JavaScript array. Let's explore how indexOf and splice accomplish this.
JavaScript - Remove a specific element from an array 
Using splice to remove from an array
Removing an element from an array is a two part process:
- Find the element in the array
- Remove the element at the position found
Let's take a look at an example:
var myArray = [1,2,3,4,5];
var positionToRemove = myArray.indexOf(4);
if (positionToRemove > -1)
myArray.splice(positionToRemove, 1);
The key solution is using the JavaScript splice function. I am using it with two parameters. Parameter one is where we want to start removing from and parameter two is how many elements to remove. In our case, 1.
Published on Feb 7, 2019
Tags: JavaScript | splice | indexof
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Jamie Munro is the author of ASP.NET MVC 5 with Bootstrap and Knockout.js, Knockout.js: Building Dynamic Client-Side Web Applications, 20 Recipes for Programming MVC 3, and 20 Recipes for Programming PhoneGap. He has been developing websites and web applications for over 20 years.
Jamie began his writing career in 2009. As the success of Jamie's blog grew, he turned his writing passion to books about web development in hopes that his many years of experience could be passed on to his readers.
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